Temperature and water requirements for germination and effects of discontinuous hydration on germinated seed survival in Tillandsia recurvata L.

Montes-Recinas, Saraí; Márquez‐Guzmán, Judith; Orozco‐Segovia, Alma

doi:10.1007/s11258-012-0066-9

Cited by 21 publications

(21 citation statements)

References 35 publications

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“…Studies addressing the influence of temperature on seed germination in bromeliads are limited to single species and to small regional scales (e.g. Klekailo ; Montes‐Recinas, Márquez‐Guzmán & Orozco‐Segovia ; Correa & Zotz ; Marques et al . ), whereas no empirical study is available with many species at a larger geographical scale.…”

Section: Introductionmentioning

confidence: 99%

‘Are 3 °C too much?’: thermal niche breadth in Bromeliaceae and global warming

2016

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Summary By the end of this century, temperature is predicted to increase by about 6 °C at higher latitudes and about 3 °C in the tropics. Although values predicted for tropical latitudes are lower, rising temperatures in the tropics are likely to have more severe consequences for tropical species that are generally assumed to have narrower climatic niches due to a higher degree of climatic stability and higher niche specialization. Even though temperature affects all ontogenetic stages, the regeneration niche of a species is fundamental for overall niche breadth and hence represents a potential major bottleneck for its distribution. We conducted germination experiments along a range of temperatures with 41 epiphytic bromeliad species to determine thermal germination traits (thermal niche breadth, lower and upper thermal limit, thermal optimum). Based on these traits, we asked whether the thermal germination niche breadth of these species is wide enough to cope with the predicted increase in temperature. Furthermore, we conducted phylogenetic comparative analyses to detect possible niche conservatism of these traits in Bromeliaceae. For 93% of all tested bromeliad species, the predicted mean annual temperature range does not exceed the thermal niche breadth. Moreover, for 85% of all tested species, the current mean annual temperature across the distribution range is well below our estimates of their thermal optima. Furthermore, we found evidence for phylogenetic niche conservatism in most assessed traits. Synthesis. Our report represents an important first step to understand and predict present and future responses of epiphytic bromeliads to global warming. At least with regard to seed germination, epiphytic bromeliads should not be negatively affected by the predicted temperature rise of 3 °C. To the contrary, future temperatures are closer to the thermal optima of most species, potentially leading to an increase in performance. However, since niche conservatism in Bromeliaceae may limit their adaptability to novel climatic conditions, a negative effect of increasing temperatures cannot be completely rejected when considering ontogenetic niche shifts.

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Section: Introductionmentioning

confidence: 99%

‘Are 3 °C too much?’: thermal niche breadth in Bromeliaceae and global warming

2016

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“… Müller et al (2016) describe germination as a key ‘bottleneck’ in the determination of species’ distributions. The literature on bromeliad germination biology is quite extensive relative to pollination and dispersal, and seedling mortality in bromeliads has been studied quite intensively in the epiphytic Tillandsioideae subfamily (particularly the genera Tillandsia and Vriesea ; Hietz et al 2002 ; Winkler et al 2005 ; Bader et al 2009 ; Montes-Recinas et al 2012 ; Toledo-Aceves et al 2012 ). The applicability of the results from these groups to terrestrial species is not clear, but the general consensus arising from work on bromeliad regeneration niches is that they are strongly influenced by climatic conditions ( Winkler et al 2007 ; Wagner et al 2013a ).…”

Section: Discussionmentioning

confidence: 99%

Geography, environment and organismal traits in the diversification of a major tropical herbaceous angiosperm radiation

Males

2018

AoB PLANTS

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The terrestrial bromeliads are a diverse group of plants native to the Americas. In this article, the distributions of 564 species are analysed to answer key questions about plant–environment interactions. Contrasting biological characteristics can explain the occurrence of different species in different climatic zones, and species native to arid zones appear to be particularly specialized. Species which are more tolerant of a range of climates tend to occur across larger geographical ranges, and closely related species in large genera tend to show differentiation in their climatic preferences.

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“…Dependence on water availability is a critical component of the bromeliad regeneration niche (Mondrag on et al, 2004;Winkler, H€ ulber & Hietz, 2005;Bader, Menke & Zotz, 2009;Goode & Allen, 2009;Mantovani & Iglesias, 2010;Montes-Recinas, M arquez-Guzm an & Orozco-Segovia, 2012;Wagner, Bogusch & Zotz, 2013). In some epiphytic species, germination and seedling growth is enhanced by the presence of specialized water-uptake structures (Wester & Zotz, 2011) and a degree of drought tolerance is a key component of the adaptive strategy of epiphytic seedlings (Adams & Martin, 1986a;Bader et al, 2009).…”

Section: Life-cycle Stagesmentioning

confidence: 99%

Think tank: water relations of Bromeliaceae in their evolutionary context

Males

2016

Bot. J. Linn. Soc.

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Water relations represent a pivotal nexus in plant biology due to the multiplicity of functions affected by water status. Hydraulic properties of plant parts are therefore likely to be relevant to evolutionary trends in many taxa. Bromeliaceae encompass a wealth of morphological, physiological and ecological variations and the geographical and bioclimatic range of the family is also extensive. The diversification of bromeliad lineages is known to be correlated with the origins of a suite of key innovations, many of which relate directly or indirectly to water relations. However, little information is known regarding the role of change in morphoanatomical and hydraulic traits in the evolutionary origins of the classical ecophysiological functional types in Bromeliaceae or how this role relates to the diversification of specific lineages. In this paper, I present a synthesis of the current knowledge on bromeliad water relations and a qualitative model of the evolution of relevant traits in the context of the functional types. I use this model to introduce a manifesto for a new research programme on the integrative biology and evolution of bromeliad water-use strategies. The need for a wide-ranging survey of morphoanatomical and hydraulic traits across Bromeliaceae is stressed, as this would provide extensive insight into structurefunction relationships of relevance to the evolutionary history of bromeliads and, more generally, to the evolutionary physiology of flowering plants.

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Temperature and water requirements for germination and effects of discontinuous hydration on germinated seed survival in Tillandsia recurvata L.

Cited by 21 publications

References 35 publications

‘Are 3 °C too much?’: thermal niche breadth in Bromeliaceae and global warming

‘Are 3 °C too much?’: thermal niche breadth in Bromeliaceae and global warming

Geography, environment and organismal traits in the diversification of a major tropical herbaceous angiosperm radiation

Think tank: water relations of Bromeliaceae in their evolutionary context

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